Plane-spur.



E. A. SCHADE.

PLANE SPUR.

APPLICATION FILEDI JUNE 18| 1911.

Patented Dec. 11, 1917.

lll

titl

tenir am dill-Al i einen a tnvnn oo., or nnvv :u uc'rrcutr. i

specification of Letters Patent.,

Patented Dem 11 1917..

To all tri/'tom t may concern." j

lds it known that lt,` llniunno lt. tici-mon, a citizen of the UnitedStates of America, residing at New Britain, Connecticut, have invented anew and useful lnlane-tlpur, of which the following is a specification.,

My present invention relates to planes and the general objects of theinvention are to provide an :improved and more eflicient spurconstruction for rabbet, dado and other planes of similar type..

i special object is to maintain the setting or adjustment of the spurwith respect to the cutting blade lin accomplishing the foregoing, ltconstruct the plane stoclr with teeth projecting into the spur receivingchannel and the spur is constructed with teeth to engage and mesh withthe teeth on the stoclr, these teeth being disposed so as to resist thestrain enerted on the spur and to thereby maintain the spur in itsadjusted position llsually the teeth on the stock are provided by a hardmetal insert seated in the body of the steeltn rlFhe accompanyingdrawing illustrates the invention embodied in a practical and prefer-red form, but it will be understood that changes and modificationsmay he made without departing from the true spirit and scope of theinvention..

lin the drawing:

lligure i is a view in side elevation of a Stanley Universal planehaving my invention incorporated therein.

lligu 2 is a horizontal sectional view taken through the spurconstruction substantially on the plane of the line 2-2 of It.,

llig 3 is a fragmentary view of that portion of the plane stocl in whichthe spur receiving channel and the recess for the anchoring element areformed.

liig. i is a detail perspective view of the so-called anchoringelement.,

liig 5 is a detail perspective view of the spur.

lttig. 6 is a similar view of a modified form of anchoring element 'lhestock of the plane in the case illustrated is formed in front and rearsections 'l' and 8 respectively7 attached to a back or body member 9,said sections being separated by an angular' opening or throat l0'through which the cutter blade il projects l2 designates the spur,located in advance ofthe cutter and `disposed in a channel or seat 13formed in the side of the front stoclr. section "lhis channel preferablyentends substantially at right angles to the cutting plane of the tool,permitting of an up and down adjustment of the spur in the channel forthe purpose of setting the spur with spect to the cutter blade, it beingunderstood that the lower cutting edge of the spur is usually setslightly below the cutting edge of the blade so as to score the materialin advance of the blade..

t 'lhe spur is locked in its adjusted position in my invention, byproviding it on the forward edge thereof with teeth or serrations la forengagement with corresponding teeth or serrations l5 on the stoclr, thespur being held seated in its channel and engaged with the teethaforesaid by means such as a screw 16 entending through a slot li' inthe spur into engagement with a screw seat in the stock at the baclr ofthe channel. rllhese interlocking teeth on the stock and spur aredisposed in planes substantially parallel to the cutting plane andtransversely with respect to the longitudinal adjustment of the spur soas to resist the strain on the spur when the plane is in use.

The teeth on the stoclr are provided in the case illustrated by a hardmetal dislr or washer 18 in the nature of an insert, seated in a recessi9 at one side of and open ing` into the edge portion of the spurreceiving channel, this dish having a flattened toothed edge portionprojecting into the edge part of the channel. rllhe locking or anchordislc itl may be secured in planes in various ways as by welding orriveting, it being shown in the present instance as held in its seat bya rivet 20. lin liig. 6 the rivet is shown formed integral with the dishmember.

This invention maires it possible to set the spur to the proper depthwith respect to the cutter and to maintain that relation during thesubsequent', use of the tool and at the same time, it is possible as thecutting edge of the spur wears down, to easily set the spur to a newadjustment or when desirable, to change the position of the spur for outting in softer or harder woods.

ll claim:

l. ln a plane, a stool; having a spur receiving channel. in one sidethereof, a r cess in said stoclr at one side of said channel and openinginto the edge of said channel, a hard metal locking device fixed in saidrecess and having a toothed edge at one side projecting into the sideedge of the channel aforesaid, a spur having one edge toothed to coactwith the teeth on said locking portion, the width of said. spurcorresponding to the width of said channel, said spur being adjustablyengaged with said lockingdevice by a lateral movement of said spurwhereby the degree of projection of said spur below said stock may becontrolledand means for holding said spur against lateral disengagementfrom said` locking device when the latter is in its adjusted operativeposition;

2. In a plane, a stock having a spur receiving channel in one sidethereof, a recess in said stock at ones'ide of said-channel and openinginto the edge of said channel, a hard metal locking device fixed in saidrecess and having a toothed edge at one sidiy projecting into the sideedge ot tho channel aforesaid, a spur having one edge toothed to coactwith the teeth on said locking portionv` the width oi said spnreorrospoinling to the width of said channel, said spar heing adjnstablyengaged with .said locking device by a lateral movement ot said spurwhereby the degree of projection oi said spur below said stock may becontrolled, and ineansfor holding said spur against lateraldisengagement from said looking device when the latter is in itsadjusted operati ve position, said holding means comprising a screwpassing through a longitudinal slot in said spur and screwing into saidstoch.

EDMUND ii. SCHADE.

@epilee of thisl patent may be obtained for five cents each, byaddressing the Commissioner oi Patents,

Washington, D. C.

